// Copyright 2023 EMQ Technologies Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package planner

import (
	"github.com/lf-edge/ekuiper/v2/pkg/ast"
)

type WindowFuncPlan struct {
	baseLogicalPlan
	windowFuncField *ast.Field
}

func (p WindowFuncPlan) Init() *WindowFuncPlan {
	p.baseLogicalPlan.self = &p
	p.baseLogicalPlan.setPlanType(WINDOWFUNC)
	return &p
}

func (p *WindowFuncPlan) BuildExplainInfo() {
	info := "windowFuncField:"
	info += "{name:" + p.windowFuncField.GetName()
	if p.windowFuncField.Expr != nil {
		info += ", expr:" + p.windowFuncField.Expr.String()
	}
	info += "}"
	p.baseLogicalPlan.ExplainInfo.Info = info
}
